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EP0006943A1 - Dispositif de commande d'un convertisseur de couple d'une transmission automatique pour vehicules - Google Patents

Dispositif de commande d'un convertisseur de couple d'une transmission automatique pour vehicules Download PDF

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Publication number
EP0006943A1
EP0006943A1 EP78900249A EP78900249A EP0006943A1 EP 0006943 A1 EP0006943 A1 EP 0006943A1 EP 78900249 A EP78900249 A EP 78900249A EP 78900249 A EP78900249 A EP 78900249A EP 0006943 A1 EP0006943 A1 EP 0006943A1
Authority
EP
European Patent Office
Prior art keywords
oil
torque converter
clutch
oil passage
input shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP78900249A
Other languages
German (de)
English (en)
Other versions
EP0006943A4 (fr
EP0006943B1 (fr
Inventor
Sadanori Nishimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of EP0006943A1 publication Critical patent/EP0006943A1/fr
Publication of EP0006943A4 publication Critical patent/EP0006943A4/fr
Application granted granted Critical
Publication of EP0006943B1 publication Critical patent/EP0006943B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
    • F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
    • F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
    • F16H2045/021—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type three chamber system, i.e. comprising a separated, closed chamber specially adapted for actuating a lock-up clutch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
    • F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
    • F16H2045/0273—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type characterised by the type of the friction surface of the lock-up clutch
    • F16H2045/0284—Multiple disk type lock-up clutch
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19149—Gearing with fluid drive
    • Y10T74/19153—Condition responsive control
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19219—Interchangeably locked
    • Y10T74/19251—Control mechanism
    • Y10T74/19256—Automatic
    • Y10T74/1926—Speed responsive

Definitions

  • the present invention relates to a direct coupling control device for a torque converter in an automatic speed change gear for vehicles principally used in automobiles.
  • a primary object of the present invention is to provide an arrangement wherein a direct coupling clutch interposed between a pump disc and turbine disc which constitute a torque converter is operated when the turbine disc reaches a speed of rotation in excess of a given value so that in the clutch region where no speed changing action of the torque converter takes place, a slip loss of the torque converter may be removed by the operation of the direct coupling clutch to enhance the transmission efficiency and to improve the fuel consumption.
  • a secondary object of the invention is to provide an arrangement wherein in case of the provision of at least two-stage, high and low, speed change geared devices, even if the rotational speed of the turbine disc reaches the'aforementioned given value, the direct coupling clutch is not operated as long as the high speed geared device is kept out of operation so that par- ticularl y when the low speed geared device required of a good accclerability is in operation, the torque increasing action of the torque converter is sufficiently utilized at all times so as not to impair the accelerating performance of the vehicle, and when shifting down or switching in operation from the high speed geared device to the low speed geared device is effected during running at high speeds, direct coupling clutch acts to avoid unfavorable situations such as occurrence of dangerous excessive deceleration and overrun of the engine.
  • a control device for a torque converter in an automatic speed change gear for vehicles said automatic speed change gear having an input shaft connected to a driving shaft of an engine through a torque converter having a pump disc associated with said driving shaft and a turbine disc associated with said input shaft, wherein between said pump disc and said turbine disc there is interposed a hydraulically operated direct coupling clutch which is capable of directly coupling these pump and turbine discs, and between an.oil pressure cylinder of said direct coupling clutch, a high pressure oil passage connected to an oil pressure source and a low pressure oil passage connected to an oil reservoir there is disposed a centrifugal valve operably connected with said turbine disc for serving to place said oil pressure cylinder in communication with said low pressure oil passage at the time of low speed rotation and with said high pressure oil passage at the time of high speed rotation.
  • FIG.l there is shown an engine E which has a driving shaft 1 connected to an input shaft 2 of a speed change gear through a torque converter T, the input shaft 2 being in turn connected to an output shaft 3 through a low speed geared device L and a high speed geared device H.
  • the low and high speed geared devices L, H have a hydraulically operated low speed clutch 4l and high speed clutch 4h, respectively, which are adapted to be selectively actuatable to operate the desired geared device L or H so as to change the gear ratio between the input and output shafts 2, 3.
  • the torque converter T is composed of a pump disc 5p associated with the driving shaft 1 of the engine E, a turbine disc 5t associated with the input shaft 2, and a stator disc 5s associated with a stator shaft 6 supported on the outer periphery of the input shaft 2,and a direct coupling clutch D of the construction as described below is interposed between the pump disc 5p and the turbine disc 5t.
  • Annular inner peripheral walls 8 and 9 of the pump disc 5p and turbine disc 5t are opposed to define a transmission oil passage 7 between both discs 5p and 5t, and have a clutch outer 10 and a clutch inner 11 formed therein in concentric relation.
  • the clutch outer 10 and clutch inner 11 respectively have a plurality of driving friction plates 12 and a plurality of driven friction plates 13 spline-engaged therewith for sliding movement, the plates 12, 13 being alternately superposed one over another.
  • annular oil pressure cylinder 14 which receives therein a pressure piston 15 opposing one side of the superposed friction plates 12, 13, and a pressure receiving ring 16 opposing the other side of the friction plates 12, 13 is locked to the clutch inner 11.
  • the chamber between the inner peripheral walls 8 and 9 is in communication with the transmission oil passage 7 through a clearance between the inner peripheral walls so that the oil pressure within the oil passage 7 may be always exerted on the front surface of the pressure piston 15. Accordingly, when the direct coupling clutch D is inoperative, the pressure within the transmission oil passage 7 assuredly maintains the pressure piston 15 in its retracted position to provide a better disengagement between the friction plates 12 and 13.
  • a centrifugal valve F for controlling the supply and discharge of working oil relative to the oil pressure cylinder 14 is arranged in the boss portion of the turbine disc 5t in the following manner.
  • annular valve body 18 of the centrifugal valve F Integrally fitted in a recessed housing 17 on one side of the boss portion of the turbine disc 5t is an annular valve body 18 of the centrifugal valve F, the inner peripheral surface of which sealingly engages the outer peripheral surface of the input shaft 2.
  • the valve body 18 has a cylindrical valve port 19 as shown in Fig.3, the valve port 19 accommodating therein a spool valve 20 and a spring 21 for biasing the inner end thereof.
  • Pivotally supported at 22 on the valve body 18 for radial movement is a centrifugal weight 23 which has an operating arm 23a in abutting engagement with the spool valve 20 at its end extended from the valve port 19 so that the centrifugal weight 23 acts on the spool valve 20 against the biasing force of the spring 21.
  • An output port 24, a low pressure port 25 and a high pressure port 26 arranged on the opposite sides of the output port are open to the valve port 19 so that as the spool valve 20 is slidably moved inwardly or outwardly, the output port 24 comes into communication with the low pressure port 25 or high pressure port 26.
  • the output port 24 is connected with the oil pressure cylinder 14 of the direct coupling clutch D through an oil passage 27 formed in the turbine disc 5t; the high pressure port 26 is connected with an oil pressure cylinder 31 of the high speed clutch 4h described later in detail through a high pressure oil passage 28 passing through the center of the input shaft 2; and the low pressure port 25 is connected with an oil reservoir R through an annular low pressure oil passage 29 concentrically formed externally of the high pressure oil passage 28 in the input shaft 2.
  • the adjacent oil passages 28 and 29 are separated by a partition pipe 30 fitted in the input shaft 2.
  • the high speed clutch 4h has a clutch outer 32, which is spline-connected to the input shaft 2 and provided at one side with an oil pressure cylinder 31, and a clutch-inner 33, which is concentrically arranged internally of the clutch outer 32 and rotatably supported on the input shaft 2, the clutch outer 32 and clutch inner 33 having a plurality of driving friction plates 34 and a plurality of driven friction plates 35 slidably spline-engaged therewith, the plates 34, 35 being alternately superposed on each other.
  • a pressure piston 36 opposing one side of the friction plates 34,35 is received in the oil pressure cylinder 31 whilst a pressure receiving ring 37 opposing the other end of the friction plates 34, 35 is locked to the clutch outer 32.
  • the clutch inner 33 is integrally formed with a driving gear of the high speed geared device H.
  • the resulting pressure causes the pressure piston 36 to advance to place, in cooperation with the pressure receiving ring 37, the group of friction plates 34, 35 into frictional contacting engagement with each other, that is, the high speed clutch 4h may be brought into its operating state.
  • centrifugal valve F mounted on the boss portion of the turbine disc 5t and the high speed clutch 4h are both disposed on the input shaft 2 and the high pressure oil passage 28 for providing a connection therebetween is disposed in the input shaft2, it is possible to simply and easily form an oil passage leading from the high speed clutch 4h to the direct coupling clutch D.
  • the low speed clutch 4l Since the construction of the low speed clutch 4l is substantially similar to the above-mentioned high speed clutch 4h, the detailed description thereof is omitted.
  • reference character P designates an oil pressure source in the form of an oil pressure pump normally driven by the pump disc 5p of the torque converter T.
  • the low speed oil passage 39 is selected by the shift valve S in Fig.4 to feed pressure oil from the oil pressure pump P to the low speed clutch 4JL, that is, if the low speed geared device L is in operative state, a supply of pressure oil to the high speed clutch 4h is interrupted so that the direct coupling clutch D in communication therewith is not supplied with pressure oil and thus remains in its inoperative state.
  • the hydraulically operated direct coupling clutch is interposed between the pump disc and turbine disc of the torque converter so that when the turbine disc reaches a rotation speed in excess of a given value, the centrifugal valve operatively connected therewith may act to apply working oil pressure to the aforesaid direct coupling clutch so as to directly couple both the discs. Accordingly, the slip loss between the aforesaid discs may be substantially eliminated in the clutch region where no speed changing action of the torque converter takes place, thereby improving the transmission efficiency and the consumption rate of fuel.
  • the high pressure oil passage connected with the centrifugal valve is placed into communication with the oil pressure cylinder of the hydraulically operated means of the high speed geared device so that even if the rotational speed of the turbine disc reaches the aforementioned given value, the aforementioned direct coupling clutch is not brought into operation unless the high speed geared device is operated.
  • the torque increasing action of the torque converter may be sufficiently utilized to obtain the desired accelerating performance, and further, at the time of the shifting down during high speed running, the direct coupling clutch may be immediately released to induce the torque converter to give rise to an adaquate rate of slip, and as a result, it is possible to avoid inconveniences such as generation of a dangerous excessive deceleration of the vehicle or overrun of the engine.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Fluid Gearings (AREA)

Abstract

Dans une transmission automatique d'un vehicule dans laquelle un arbre primaire (2) est relie a un arbre de transmission (1) d'un moteur par l'intermediaire d'un convertisseur de couple (T) pourvu d'une roue de pompe (5p) reliant l'arbre de transmission (1) et une roue de turbine (5t) reliant l'arbre primaire (2), un systeme de commande de convertisseur de couple pourvu d'un embrayage hydraulique (D) place entre la roue de pompe (5p) et la roue de turbine (5t) pour relier directement ces roues, et une vanne centrifuge (F) entre un cylindre hydraulique (14) de l'embrayage direct (D) et un canal de fluide a haute pression (28) allant a la source d'alimentation en fluide (P) et un canal de fluide a basse pression (29) allant a un reservoir de fluide (R) de sorte que le cylindre hydraulique (14) est relie au canal de basse pression (29) pendant une periode de rotation a faible vitesse tandis que le cylindre hydraulique (14) est connecte au canal de haute pression (28) par la vanne centrifuge (F) en cooperation avec la roue de turbine (5t).
EP78900249A 1977-12-20 1978-11-10 Dispositif de commande d'un convertisseur de couple d'une transmission automatique pour vehicules Expired EP0006943B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP15387377A JPS5486062A (en) 1977-12-20 1977-12-20 Torque converter controller of vehicleused automatic transmission
JP153873/77 1977-12-20

Publications (3)

Publication Number Publication Date
EP0006943A1 true EP0006943A1 (fr) 1980-01-23
EP0006943A4 EP0006943A4 (fr) 1982-01-08
EP0006943B1 EP0006943B1 (fr) 1984-05-02

Family

ID=15571965

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78900249A Expired EP0006943B1 (fr) 1977-12-20 1978-11-10 Dispositif de commande d'un convertisseur de couple d'une transmission automatique pour vehicules

Country Status (5)

Country Link
US (1) US4320821A (fr)
EP (1) EP0006943B1 (fr)
JP (1) JPS5486062A (fr)
DE (1) DE2862398D1 (fr)
WO (1) WO1979000410A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079756A (en) * 1956-12-27 1963-03-05 Borg Warner Hydraulic torque converter
US3693478A (en) * 1971-01-06 1972-09-26 Gen Motors Corp Transmission having a converter clutch and a control
GB1352465A (en) * 1970-05-09 1974-05-08 Brockhouse Eng Ltd Hydokentic fluid torque transmission
US3985046A (en) * 1975-06-23 1976-10-12 Caterpillar Tractor Co. Control valve for a torque converter lock-up clutch or the like
FR2317556A1 (fr) * 1975-06-28 1977-02-04 Honda Motor Co Ltd Convertisseur hydraulique de couple avec un embrayage de blocage entre la pompe et la turbine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3164232A (en) * 1962-12-31 1965-01-05 Ford Motor Co Sequentially operable clutch assembly and fluid coupling
DE1550825B1 (de) * 1965-12-01 1971-03-11 Honda Gijutsu Kenkyusho Kk Hydraulische steuerungseinrichtung fuer ein hydrodynamisch mechanisches verbundgetriebe
US3542174A (en) * 1969-03-04 1970-11-24 Honda Motor Co Ltd Torque converter connected to fluid operated clutches
JPS5025145Y2 (fr) * 1971-02-17 1975-07-29
JPS4944987U (fr) * 1972-07-31 1974-04-19
JPS5213381U (fr) * 1975-07-18 1977-01-29
JPS52101360A (en) * 1976-02-20 1977-08-25 Nissan Motor Co Ltd Automatic mission with direct clutch
JPS52101359A (en) * 1976-02-20 1977-08-25 Nissan Motor Co Ltd Automatic mission with direct clutch
JPS52129889U (fr) * 1976-03-29 1977-10-03
JPS5510695Y2 (fr) * 1976-05-12 1980-03-08

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079756A (en) * 1956-12-27 1963-03-05 Borg Warner Hydraulic torque converter
GB1352465A (en) * 1970-05-09 1974-05-08 Brockhouse Eng Ltd Hydokentic fluid torque transmission
US3693478A (en) * 1971-01-06 1972-09-26 Gen Motors Corp Transmission having a converter clutch and a control
US3985046A (en) * 1975-06-23 1976-10-12 Caterpillar Tractor Co. Control valve for a torque converter lock-up clutch or the like
FR2317556A1 (fr) * 1975-06-28 1977-02-04 Honda Motor Co Ltd Convertisseur hydraulique de couple avec un embrayage de blocage entre la pompe et la turbine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO7900410A1 *

Also Published As

Publication number Publication date
EP0006943A4 (fr) 1982-01-08
DE2862398D1 (en) 1984-06-07
WO1979000410A1 (fr) 1979-07-12
US4320821A (en) 1982-03-23
JPS5486062A (en) 1979-07-09
JPS5653146B2 (fr) 1981-12-17
EP0006943B1 (fr) 1984-05-02

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